910
FNCA52 TJSJ 301930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST SAT MAY 30 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-310800-
SOUTHEAST COASTAL PLAINS-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 30 20 10
TEMP (24H TREND) 73 (-2) 91 (+2) 73 91
RH % (24H TREND) 94 (+5) 54 (-1) 93 47
WIND 20FT/EARLY(MPH) E 12 SE 12 E 11 E 13
WIND 20FT/LATE(MPH) E 11 SE 12 E 9 SE 14
MIXING HGT(FT-AGL/MSL) 4290 4700
TRANSPORT WND (MPH) SE 15 SE 15
VENT RATE (KT-FT) 55770 61100
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-310800-
SOUTHERN HILLS-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 30 10 0
TEMP (24H TREND) 69 (-3) 88 (+3) 70 87
RH % (24H TREND) 100 (+7) 64 (-1) 99 58
WIND 20FT/EARLY(MPH) E 11 SE 11 E 8 E 11
WIND 20FT/LATE(MPH) E 11 SE 11 E 8 SE 12
MIXING HGT(FT-AGL/MSL) 5020 5160
TRANSPORT WND (MPH) SE 14 SE 14
VENT RATE (KT-FT) 60240 61920
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-310800-
NORTH COASTAL PLAINS-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 60 0 10
TEMP (24H TREND) 72 (-2) 93 (+3) 73 92
RH % (24H TREND) 99 (+4) 61 (-1) 100 55
WIND 20FT/EARLY(MPH) SE 13 E 13 E 11 E 13
WIND 20FT/LATE(MPH) SE 11 E 16 SE 9 E 16
MIXING HGT(FT-AGL/MSL) 4800 4880
TRANSPORT WND (MPH) E 10 E 12
VENT RATE (KT-FT) 43200 48800
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-310800-
NORTHERN HILLS-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER CLEAR PCLDY CLEAR MCLEAR
PRECIP TYPE NONE TSTMS NONE SHOWERS
CHANCE PRECIP (%) 0 60 0 20
TEMP (24H TREND) 70 (-1) 91 (+2) 70 90
RH % (24H TREND) 100 (+3) 64 (+3) 100 57
WIND 20FT/EARLY(MPH) SE 11 SE 10 SE 8 SE 10
WIND 20FT/LATE(MPH) SE 5 E 13 SE 5 E 13
MIXING HGT(FT-AGL/MSL) 5650 5610
TRANSPORT WND (MPH) SE 8 E 8
VENT RATE (KT-FT) 39550 39270
DISPERSION 5 5
DSI 2 5 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-310800-
WEST COAST-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER CLEAR MCLEAR CLEAR MCLEAR
PRECIP TYPE NONE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 0 40 0 10
TEMP (24H TREND) 73 (-1) 92 (+1) 73 92
RH % (24H TREND) 98 (+4) 63 (+1) 100 56
WIND 20FT/EARLY(MPH) SE 13 SE 13 SE 11 SE 14
WIND 20FT/LATE(MPH) E 13 SE 14 E 13 E 13
MIXING HGT(FT-AGL/MSL) 4310 4690
TRANSPORT WND (MPH) SE 14 SE 14
VENT RATE (KT-FT) 51720 56280
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-310800-
EASTERN INTERIOR-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 50 20 10
TEMP (24H TREND) 71 (-2) 89 (+2) 71 89
RH % (24H TREND) 100 (+5) 64 (0) 100 58
WIND 20FT/EARLY(MPH) SE 13 SE 12 SE 11 SE 13
WIND 20FT/LATE(MPH) SE 13 SE 13 SE 11 SE 13
MIXING HGT(FT-AGL/MSL) 5530 5340
TRANSPORT WND (MPH) SE 14 SE 15
VENT RATE (KT-FT) 66360 69420
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-310800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 20 20
TEMP (24H TREND) 69 (-3) 85 (+5) 69 85
RH % (24H TREND) 100 (+3) 73 (-3) 100 66
WIND 20FT/EARLY(MPH) SE 11 SE 11 SE 9 SE 12
WIND 20FT/LATE(MPH) SE 11 SE 12 SE 8 SE 12
MIXING HGT(FT-AGL/MSL) 3610 4380
TRANSPORT WND (MPH) SE 15 SE 15
VENT RATE (KT-FT) 46930 56940
DISPERSION 5 5
DSI 6 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-310800-
CENTRAL MOUNTAIN RANGE-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER CLEAR PCLDY CLEAR MCLEAR
PRECIP TYPE NONE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 60 0 10
TEMP (24H TREND) 67 (-3) 88 (+5) 68 88
RH % (24H TREND) 100 (+4) 66 (0) 100 60
WIND 20FT/EARLY(MPH) SE 8 SE 10 SE 6 SE 10
WIND 20FT/LATE(MPH) SE 6 SE 9 SE 8 SE 9
MIXING HGT(FT-AGL/MSL) 5930 6410
TRANSPORT WND (MPH) SE 12 E 8
VENT RATE (KT-FT) 59300 44870
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-310800-
CAYEY MOUNTAIN RANGE-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 30 20
TEMP (24H TREND) 70 (-1) 84 (+2) 70 84
RH % (24H TREND) 100 (+2) 73 (+2) 100 66
WIND 20FT/EARLY(MPH) E 9 SE 10 SE 8 E 11
WIND 20FT/LATE(MPH) SE 9 SE 10 E 6 SE 11
MIXING HGT(FT-AGL/MSL) 4530 4650
TRANSPORT WND (MPH) SE 13 SE 15
VENT RATE (KT-FT) 49830 60450
DISPERSION 5 5
DSI 5 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-310800-
VIEQUES-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 30 20
TEMP (24H TREND) 75 (-2) 88 (+1) 75 88
RH % (24H TREND) 97 (+9) 66 (-2) 91 61
WIND 20FT/EARLY(MPH) E 17 SE 14 E 12 SE 14
WIND 20FT/LATE(MPH) E 17 SE 13 E 12 SE 14
MIXING HGT(FT-AGL/MSL) 2600 3350
TRANSPORT WND (MPH) SE 16 SE 17
VENT RATE (KT-FT) 36400 50250
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-310800-
CULEBRA-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 40 20 10
TEMP (24H TREND) 76 (-2) 89 (+2) 76 89
RH % (24H TREND) 96 (+10) 64 (-4) 90 59
WIND 20FT/EARLY(MPH) E 17 SE 14 E 13 SE 16
WIND 20FT/LATE(MPH) SE 17 SE 14 E 12 SE 14
MIXING HGT(FT-AGL/MSL) 2500 3330
TRANSPORT WND (MPH) SE 17 SE 20
VENT RATE (KT-FT) 37500 56610
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-310800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER CLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 0 10 10 0
TEMP (24H TREND) 74 (-1) 92 (+2) 74 92
RH % (24H TREND) 95 (+7) 51 (-2) 94 45
WIND 20FT/EARLY(MPH) E 17 E 17 E 16 E 17
WIND 20FT/LATE(MPH) E 17 SE 18 E 17 SE 19
MIXING HGT(FT-AGL/MSL) 4380 4910
TRANSPORT WND (MPH) SE 18 SE 18
VENT RATE (KT-FT) 70080 78560
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-310800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY PCLDY CLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 20 30 20 0
TEMP (24H TREND) 76 (-2) 86 (+1) 76 86
RH % (24H TREND) 97 (+10) 69 (-2) 90 63
WIND 20FT/EARLY(MPH) E 17 SE 17 E 13 SE 17
WIND 20FT/LATE(MPH) E 17 SE 16 E 14 SE 16
MIXING HGT(FT-AGL/MSL) 3060 3370
TRANSPORT WND (MPH) SE 17 SE 20
VENT RATE (KT-FT) 45900 57290
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-310800-
ST CROIX-
330 PM AST SAT MAY 30 2026
TONIGHT SUN SUN NIGHT MON
CLOUD COVER PCLDY PCLDY MCLEAR CLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 20 30 20 0
TEMP (24H TREND) 75 (-2) 87 (+1) 75 87
RH % (24H TREND) 97 (+9) 67 (-3) 91 62
WIND 20FT/EARLY(MPH) E 16 E 17 E 12 E 16
WIND 20FT/LATE(MPH) E 16 SE 17 E 14 E 16
MIXING HGT(FT-AGL/MSL) 3740 3840
TRANSPORT WND (MPH) SE 21 SE 21
VENT RATE (KT-FT) 67320 69120
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page